diff --git a/validation/test-suite.py b/validation/test-suite.py
index 768fbd50deb4a1ddd13730a1974dc9d20f061c7e..f03845142ffc628ae8345e727addbc4c138e04e5 100644
--- a/validation/test-suite.py
+++ b/validation/test-suite.py
@@ -263,6 +263,7 @@ def _do_step(func, msg, *args, **kwargs):
 def _main():
     """Run as script."""
     # ToDo: add test fetching associated data from the internet
+    # ToDo: add test for missing associated data
     expctd_rslts = {
         "working.cif": {
             "ret_val": 0,